Celebrities React To David Letterman's Retirement News, Share Support And Admiration

Apr 04, 2014 | Updated Apr 04, 2014

While taping "The Late Show" on Thursday, April 3, longtime host David Letterman casually announced he will retire in 2015. Many celebrities who crossed paths with Letterman in his 33 years behind the desk took to Twitter to share feelings, photos and anecdotes:

Also on HuffPost: